*{
	text-decoration: none;
}
#container{
	width: 520px;
    height: 280px;
    margin: 0 auto;
    border: 3px solid black;
    overflow: hidden; 
    position: relative;
}
#picture{
    margin: 0;
    padding: 0;
	height: 280px;
	position: absolute; 
	z-index: 1; 
}
#picture img{
	float: left;
	margin: 0;
}
#buttons { 
	position: absolute;
	width: 80px; 
	height: 10px; 
	bottom: 20px; 
	left: 250px; 
	margin: auto 0;
	z-index: 2;
}
#buttons span { 
	cursor: pointer; 
	float: left; 
	border: 1px solid #fff; 
	width: 10px; height: 10px; 
	border-radius: 50%; 
	background: #333; 
}
#buttons .on {  
	background: orangered;
}
.arrow { 
	cursor: pointer; 
	display: none; 
	line-height: 25px; 
	text-align: center; 
	font-size: 20px; 
	font-weight: bold; 
	width: 28px; 
	height: 28px;  
	position: absolute; 
	z-index: 2; 
	top: 120px; 
	background-color: RGBA(0,0,0,.3); 
	color: #fff;
}
.arrow:hover { 
	background-color: RGBA(0,0,0,.7);
}
#container:hover .arrow { 
	display: block;
}
#prev { 
	left: 20px;
}
#next { 
	right: 20px;
}

